Buy radiant cut – certified radiant cut diamonds

Buy radiant cut diamonds

The radiant cut combines the rectangular, cut-cornered outline of the emerald cut with brilliant faceting – a step-cut outline that sparkles like a brilliant. Here you find every radiant in our stock with a laboratory report.

More about this cut

Henry Grossbard developed the radiant in 1977. On the report the shape is called "Cut-Cornered Rectangular (or Square) Modified Brilliant". With 70 facets it is among the most heavily faceted cuts; the cut corners make it sturdier than the princess cut.

What to look at: length-to-width ratio 1.00–1.05 for square, 1.20–1.50 for rectangular radiants. The cut holds colour well, which is why it is common in fancy colours; in colourless stones grades from G–H can be sufficient. Polish and symmetry should be "Excellent" or "Very Good".

The listing below shows radiants only. Every report number can be verified with the laboratory.

288 diamonds

Shape	Carat	Colour	Clarity	Cut	Polish	Symmetry	Fluor.	Certificate	Price
Radiant	1.51	K	SI2	—	Very good	Very good	Medium	GIA 2547413242	US$5,587
Radiant	1.51	K	VS2	—	Excellent	Excellent	Medium	GIA 2243043386	US$6,191
Radiant	1.51	J	SI1	—	Excellent	Excellent	None	GIA 1459117061	US$7,248
Radiant	1.51	E	I1	—	Very good	Very good	Faint	GIA 7543774066	US$7,248
Radiant	1.51	E	I1	—	Excellent	Very good	None	GIA 1549897802	US$7,248
Radiant	1.51	I	SI2	—	Excellent	Very good	Faint	GIA 6542413233	US$7,248
Radiant	1.51	E	SI2	—	Excellent	Very good	None	GIA 6551551304	US$9,513
Radiant	1.50	Fancy Yellow	SI2	—	Excellent	Very good	Faint	GIA 2231719863	US$2,708
Radiant	1.50	Fancy Light Yellow	VS1	—	Excellent	Excellent	None	GIA 1242028590	US$3,135
Radiant	1.50	Fancy Light Yellow	VS2	—	Excellent	Very good	Faint	GIA 2235895838	US$3,278
Radiant	1.50	Fancy Yellow	VS2	—	Excellent	Very good	Medium	GIA 5231913194	US$3,278
Radiant	1.50	L	SI2	—	Excellent	Excellent	Faint	GIA 5503909874	US$4,500
Radiant	1.50	L	SI2	—	Excellent	Very good	None	GIA 1483489429	US$4,500
Radiant	1.50	L	SI2	—	Excellent	Excellent	None	GIA 7518800805	US$4,500
Radiant	1.50	L	SI1	—	Excellent	Excellent	Faint	GIA 2514298795	US$4,800
Radiant	1.50	L	SI1	—	Excellent	Very good	Medium	GIA 7543700584	US$4,800
Radiant	1.50	J	I1	—	Excellent	Very good	None	GIA 1548580607	US$4,950
Radiant	1.50	I	I1	—	Excellent	Excellent	None	GIA 1548277494	US$5,400
Radiant	1.50	K	SI2	—	Excellent	Excellent	None	GIA 7531645928	US$5,550
Radiant	1.50	K	SI1	—	Excellent	Very good	Faint	GIA 6542466536	US$5,850
Radiant	1.50	G	I1	—	Excellent	Very good	None	GIA 1555029985	US$6,300
Radiant	1.50	G	I1	—	Very good	Very good	None	GIA 2557584339	US$6,300
Radiant	1.50	J	SI2	—	Excellent	Very good	None	GIA 5553842991	US$6,600
Radiant	1.50	J	SI2	—	Excellent	Very good	Faint	GIA 1545128714	US$6,600

How to buy a certified diamond at STIG International

At STIG International you buy natural diamonds with an independent laboratory report directly online: choose the stone in the listing, verify its report number with the laboratory, pay via Stripe or bank transfer and receive it insured with the original certificate.

Choosing the stone

Every diamond in the listing is a specific, individual stone with its own report number – no placeholder, no sample goods. With the configurator you narrow the stock by cut (round brilliant, princess, emerald, pear, marquise, cushion, oval), carat, colour, clarity, cut grade, polish, symmetry, fluorescence, laboratory and price. Carat is a unit of weight: 1 ct = 0.2 g. Colour is graded from D (colourless) to Z, clarity from FL (flawless) to I3.

The stone's page shows every value exactly as it appears on the report, plus a 3D model of the cut. The price is in US dollars and includes insured shipping.

Verifying the report

Every stone carries a report from the Gemological Institute of America (GIA). The report number on the stone's page links straight to GIA Report Check, which shows the laboratory's original data. Compare weight, colour, clarity and measurements with ours before you buy. The report number is usually also laser-inscribed, microscopically small, on the girdle.

Paying

In the shop you pay via Stripe by credit card, Apple Pay, Google Pay or SEPA direct debit; card details are entered at Stripe only and never reach our servers. Bank transfer is available by arrangement. The stone is reserved for you while you pay.

Shipping and handover

The stone is shipped insured with a specialised courier, usually within 7 to 14 working days, and handed over only against proof of identity. The laboratory's original certificate is enclosed. On request you can also view stones at our office in Dubai. We clarify with you before the purchase which import charges apply in your country.

Withdrawal

Consumers in the EU have a statutory right of withdrawal of 14 days from receipt of the stone. We do not offer voluntary returns beyond that. Details are in the cancellation policy and the terms and conditions.

What you can hold us to

STIG International Gemstone FZCO DMCC is registered in the DMCC commercial register in Dubai (DMCC-1007195) and trades under its compliance, KYC and anti-money-laundering rules. We source only diamonds whose origin is documented under the Kimberley Process, and we work with the law firm Kayrouz & Associates for escrow. More on the certifications page. We are a dealer, not an investment adviser: we sell a physical product and make no statements about price developments.

Certified origin, verifiable quality

A natural diamond is a physical product that is passed on across generations. Whoever buys one should know where it comes from and what it is: we deal exclusively in natural, untreated stones whose origin is documented under the Kimberley Process and whose quality an independent laboratory has established.

Every stone in this overview has been pre-qualified by us: natural, untreated, conflict-free and graded by one of the three leading laboratories. The report number takes you straight to the original at the institute — check for yourself before you talk to us.

Call us+971 559 940 142We are happy to advise you personally

The stone first, the setting later

To give a diamond is to give something that stays. Whether as a loose stone in a sealed blister or set later into a ring, a necklace or earrings — the decision about the setting can wait; the one about the stone cannot.

Choose the stone first. For the setting we accompany you and work with goldsmiths we have known for years.

How to judge a diamond

The four Cs — carat, colour, clarity, cut — are the beginning, not the end. A high-grade stone must also be untreated, have documented fluorescence and reach at least “Very Good” in polish and symmetry. The fifth C, the certificate, makes all of it verifiable.

That is why we show every value exactly as it appears on the report — and link the report.

What to expect from STIG

We deal exclusively in natural, certified diamonds from 0.30 ct. Every stone carries a report from the GIA (Gemological Institute of America); the report number is linked in the shop and can be checked at the institute in seconds.

Stones can be viewed at our office in Dubai or sent to you under insurance for inspection. The price you see is the price.